Master of Etherium

Master of Etherium's power and toughness are each equal to the number of artifacts you control.
Other artifact creatures you control get +1/+1.

Executioner's Capsule

{1}{B}, {T}, Sacrifice this artifact: Destroy target nonblack creature.

Tidehollow Strix

Flying
Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.)

Goldmire Bridge

This land enters tapped.
Indestructible
{T}: Add {W} or {B}.

Glassdust Hulk

Whenever another artifact you control enters, this creature gets +1/+1 until end of turn and can't be blocked this turn.
Cycling {W/U} ({W/U}, Discard this card: Draw a card.)

Windwright Mage

Lifelink (Damage dealt by this creature also causes you to gain that much life.)
This creature has flying as long as an artifact card is in your graveyard.

Tidehollow Sculler

When this creature enters, target opponent reveals their hand and you choose a nonland card from it. Exile that card.
When this creature leaves the battlefield, return the exiled card to its owner's hand.

Seat of the Synod

Court Homunculus

This creature gets +1/+1 as long as you control another artifact.

Thopter Foundry

{1}, Sacrifice a nontoken artifact: Create a 1/1 blue Thopter artifact creature token with flying. You gain 1 life.

Razortide Bridge

This land enters tapped.
Indestructible
{T}: Add {W} or {U}.

Obelisk of Esper

Mistvault Bridge

This land enters tapped.
Indestructible
{T}: Add {U} or {B}.

Salvage Slasher

This creature gets +1/+0 for each artifact card in your graveyard.

Faerie Mechanist

Flying
When this creature enters, look at the top three cards of your library. You may reveal an artifact card from among them and put it into your hand. Put the rest on the bottom of your library in any order.

Parasitic Strix

Flying
When this creature enters, if you control a black permanent, target player loses 2 life and you gain 2 life.

Darklit Gargoyle

Flying
{B}: This creature gets +2/-1 until end of turn.

Vault of Whispers

Courier's Capsule

{1}{U}, {T}, Sacrifice this artifact: Draw two cards.

Etherium Sculptor

Artifact spells you cast cost {1} less to cast.

Replicating Ring

{T}: Add one mana of any color.
At the beginning of your upkeep, put a night counter on this artifact. Then if it has eight or more night counters on it, remove all of them and create eight colorless snow artifact tokens named Replicated Ring with "{T}: Add one mana of any color."

Etherwrought Page

At the beginning of your upkeep, choose one —
• You gain 2 life.
• Surveil 1. (Look at the top card of your library. You may put that card into your graveyard.)
• Each opponent loses 1 life.

Sludge Strider

Whenever another artifact you control enters or leaves the battlefield, you may pay {1}. If you do, target player loses 1 life and you gain 1 life.